Locomotive



Aug. 1, l933 c'. A. SIEGEL Er A1.

LOGOMOTIVE Filed March 14, 1930 2 Sheets-Sheet l MNEYS Aug. 1, 1933.

c. A. slEGEl...) l-:r AL

LOGOMOTI VE 2 Sheets-Sheet 2 Filed March 14, 1930 IVENT S P ATTORNEYS' Patented Aug. 1, Y1933 PATENT oFFlc-E f e LOCGMO'EIVE YChester A. Siegel, Newark, and' John P. Neff, East ran'ge, N. `.,.assignors to American Arch Company, New York, Nif., a Corporation of Delf aware Application Marcela, i930. seria1N0.4s5,7o4

Thisinvention relates vto locomotives, and particularly to locomotive fire boxV and arohconstructions. Y

One of the primaryobjrects of the invention is '51 j 'to simfalifyv and improve locomotive firey box arches and the support thereof, and at the saine time?, to.- promoteV Water circulation in the Water leg ofthe fire box and toincrease the evaporative necessity for relatively longside brick and of the necessityfor diierentrsizes of sidebrick in the fsame re box; the making `feasible the employment of a singlel size and pattern of side brick in 20,;al1cases and of middlebrick in many cases, or even making possible the use of a Vsingle form of brick for the Whole arch, Wherebythe advantage of.v a large decrease in the number of Abrick sizes and patterns to be carried in stock is attained iitlhevobviation, in locomotive re boxes employing middle Water legs, of the usual necessity for arch.k tubes,y fbetween the middle and iside, Water legs,

especially in wide fire boxes; and, in general, the improvement and simplirlcationeof the fire box lland arch construction Vas a Whole, and the reduction of costs, especially for maintenance andv repair. c p

That the full purport of the foregoingk general statemenbof objects and advantages may be frealized, it@ should be runderstood that, in constructions heretofore known inthe art, it has generally been necessarynotonly to employ diierent sizesfand shapesnfor middle and side bricks, respectively, b utalso diierent sizes of side brick. 4071i in the I'same; fire box owing to the difference in` thereof is apt to Vbe sluggish. e l

I`Specifically, thereforethe present invention involves primarily the overcoming of the diiiicultiesheretofore encountered,by the provision of 5 acomparatively simple' 'device which serves a 'ia/long with greater safetyrthe elimination of the` legsV the circulation in the lower rear corners -iiverfold purpose,l andpfrom -kvvhich other vinci-v 3 Claims. (Cl. 122-68) dental advantages result. Y In the preferred form,

the invention involves the provision in each side sheet of the fire box, of a channel memberwhich may be secured to or formedY integrally with the side sheet, such member being elongated substantially lengthwise of the side sheet, being `preferably substantially U-shaped in cross section deepening toward the front of the re box, and having afcrwardly extending throat member which is adapted to be secured into the throat Vsheet of the re box. The ve chief purposes served by this construction are: to provide increased evaporative surface, to accommodate ex.-7 pansion and contraction of the side sheet, to in' crease the circulation in the side Water leg, t0

provide asimple vand stable support for the side` brick of the arch and ,prevent Wearof such brick against the side sheet,- and to-make `possible the employment' of a refractory arch of".

uniforrnrvvidth from the lower front end to the upper rear end and avoid thewnecessity] for dii'' ferent lengthsof brick. A,

How the foregoing objects and advantages are attained by'our invention, together with such other advantages as are incident to thcinvento'n' or will occur to those skilled in the art, Willr be clearfrcm .the following description, taken together with the" accompanying drawings, in which drawings Figure 1 is a vvertical longitudinal mid-section thru the fire box of a locomotive, taken on the line '1-1 of Fig. embodying our improvements; `Figure 2 is a vertical transverse section taken on the line 2 2 of Fig. 1;

Figure 3 isa longitudinal section thru the chief structuralv element of the invention, taken on the line 3 -3 of Figjfl and showingthe connection of the element to the side and throat sheets oi the fire box; v

Figure l is a fragmentary enlarged sectional view, in general similar to Fig. 2, of an arch andV firel box structure showing our invention lapplied to amodied form. of re box; and

Figures 5e, 6 and '7 areviews'similar to Fig. 4 illustrating still other modications inV which our invention is applied.

Byreference iirst to Figs. l, 2 and 3, it will be seenv that We have illustrated a locomotive fire box construction having front and rear Water legs 23, formed,`respectively, by outside and inside sheets 4, 5 and 6, 7; side water legs, 8, formed by the outside and inside side` sheets 9 and 10; water and steam space 11, defined by. the crovvnl sheet lZ'androof sheets 13; flue sheet 143, in Whichthe flues 1K5 are secured; the usual mud ring 16; and fire door opening 17. In this :lire box, as is now frequently the practice, are placed two inner or middle water legs 18, 18, which open upwardly into the space 11 above the crown sheet 12, and which have bulbous portions 19 inclined downwardly and forwardly with a connection 20 to the throat sheet 5.

Ordinarily, in such a iire box, the middle bricks 21 of the arch are supported between the two arch bricks 22 rest at their inner ends on the bulbs 19 and extend outwardly and upwardly to rest at their outer ends directly against the side sheets 10. Owing to the'inclination of the arch, as seen in Fig. l, andthe inclination of the sheet 10 as seenin Fig.2, the width to be spanned by the side brick is greater at thefront of the arch than at the rear of the arch. This ordinarily necessitates either a steep angle of inclination of the side bricks at the back of the arch and a very viatangle'at the front end, or else. the employment, particularly in long reboxes,

- of two or three different sizes or lengths of sidevr By our invention, the brick-supporting water-4' circulating', expansion member or channel 23, which, as shown in'Figs. 2 and 3, is welded in as apart of the insidesidesheet 10, compensates for the difference in distance'between the side sheets uat the lower frontend of the arch 'and at the upper rear Vend of the arch, so that a' straightline brick contacting surface 24', exactly parallel with thebulbous portion 19 of the inner water fleg, 'is provided. It will thus be seen, as in Fig. 2, that the side brick 22 may all be of the same'shape and size, and all lie at the same angle, in this case being placed horizontally fronr seen from' Fig. 2 makes it possible even to employ" f3 a singleformnof brick throughout the entire arch.` j Y Y i' From Figures'l, 2 and 3, it will be further apparent that the simple U-shaped channel device, or inwardly-bowed side sheet construction,

which we have used to attain these results also serves to provide (for expansion and contraction of the side sheets without breakage or cracking thereof, to .provide additional evaporating surface, and to effect a circulation of water, by

#-7 means of the throat 23a, which is connected to the` water; leg 2, thru'the throat sheet 5, back intothe side water leg, thejcross-sectional area of the passage thru the channel member being naturally gradually'reduced toward the rear end.

,A It may be here mentioned that the connection of the member 23 to the sheets 5 and 10 may conveniently be made, as here shown, by swaging the end of the throat piece 23a into sheet 5 and welding the member 23 intoethe side sheet 10, thus giving a very stable and rm support.

That the invention is very nexibie in its arrangement, that is, capable of application Vto varyingtypes`of rire boxes and arch brick arrangement, will be evident from Figs. 2, ,4, 5, 6

i' and '1. vIn Fig. 2,',as heretofore shown, the in've'ner tion cooperates with a pair of middle waterflegs,

bulbs 19 of the middle water legs, and the'sidef,

Vand length, the middle brick is made of slightly `larger span, all the bricks being socketed at each end. In this case also, a good firm seating of the brick` 22a is provided on the curved surface 24 of the member 23, all wear on the side sheet being eliminated, the elongated middle brick 21a seating rnily between the two internal water legs 18.

In Fig; 5 the invention is shown as applied to I a nre box in which internal water legs are eliminated, but three arch tubes 25 are used. In this arrangement'as in the arrangement of Fig. 2, the entire arch is made up of one type of brick, which inthis instance gives a flat arch, the brick 22h being reversible, and so^cut at their ends as to provide for diierent spacings of tubes and sidesheets.-

' In Fig. 6, it willbe seen that the supporting 100 members 23, with their rounded lseats 24, provide a strong and stable support for an entirely refractory arch structure, which for purposes of safety and strength is made up of substantially Vvupwardly curved brick 22e, interlocking with one 105 another as at the point 26.

In the modification shown in Fig. 7 it will be seen that the invention cooperates with the widely spaced internal Awater legs 18a`and the central l aren tube 25a te provide for the use of e' single 110 type of brick throughout the arch.

In any of the arrangements, it will be seen that the invention accomplishes in a very simple manner the rive mainV purposes hereinbefore stated, and in general materially Simplies and im 115 proves the arch and rire box structure taken asV a whole, and is capable of cutting down to a minimumthe number of brick styles and sizes required to'be kept in stock. While we have notv illustrated them, it will, of course, be understood 120 that the'usual staybolts are preferably employed in the water-legs, and also in the elements 23.

What we claim is:

l. A locomotive rire-box constructionl having side wall kwater legs spaced from each other different distances as between an upper rear portion of the box and a lower forward portion thereof, an arch brick supporting structure intermediate said side water legs and extended gen erally from an upper rear portion of the box forwardly and downwardly to a lower forward portion thereof, an arch brick supporting element in the form of a Waterleg communicating with a side water leg, extended similarly to said structure from an 'upper rear portion of the box135 forwardly and downwardly to a lower forward portion thereof and varying in widthto present an inner arch brick supporting edge generally parallel to said structure, and refractory arch bricks having opposite ends supported on said structure and said element, whereby bricks of uniform ldimensions transversely of the re-box may be employed substantially throughout the length Aof the refractory arch.

2. A locomotive fire-box construction having side Wall water legs spaced from each other different distances as between an upper rear portion of the box and alower forward portion thereof, an arch brick supporting structure intermediate said side water Y legs and extended 50 generally from an upper rear portion of the box portion of the box and a lower forward portion forwardlyand downwardly to a lower forward portion thereof, anV arch brick supporting element in the form of a water leg communicating with a side water leg, extended similarly to said structure from an upper rear portion of the box forwardly and downwardly to a lower forward portion thereof and varying in width to present an inner arch brick supporting edge generally parallel to said structure, and refractory arch bricks having opposite ends supported on said structure and said element, whereby bricks of uniform dimensions transversely of the fire-box may be employed substantially throughout the length of the refractory arch, said arch brick supporting structure comprising a water circulating element.

3. A locomotive fire-box construction having side wall water legs spaced from each other thereof, an arch brick supporting structure intermediate said side water legs and extended generally from an upper rear portion of the box forwardly and downwardly to a`lower forward portion thereof, an arch brick supporting element supported by and secured to a side water leg, extended similarly to said structure `'from an upper rear portion of the box forwardly and downwardly to a lower forward portion thereof and varying in width to present an inner arch brick supporting edge generally parallel to said structure, and refractory arch bricks having opposite ends supported on said structure and said element, whereby bricks of uniform dimensions transversely of the re-box may be employed substantially throughout the length of the refractory arch.

CHESTER A. SIEGEL.

JOHN P. NEFF. 

